Umikaze Jam Open Class Final Posted on August 16, 2015 by Effraim — Leave comments ↓ Bmx Bose just dropped this awesome edit from the Umikaze jam in Yokosuka City, Japan with the Open Class riders featuring the likes of Shinichiro Hara, Kouichi Higo, Takahiro Ikeda, Moto Sasaki and many more.